C++ Constructor initialization list strangeness

Question

I have always been a good boy when writing my classes, prefixing all member variables with m_:

class Test {
    int m_int1;
    int m_int2;
public:
    Test(int          


        

Answer 1

Yes, it's valid. The names in the member initializer list are looked up in the context of the constructor's class so int1 finds the name of member variable.

The initializer expression is looked up in the context of the constructor itself so int1 finds the parameter which masks the member variables.